Moscow meda claims terrifying weapon can dodge radar defences and bring destruction to an area the size of 'Texas or France'

Russia is preparing to test-fire a nuclear weapon which is so powerful it could reportedly destroy a whole country in seconds.

The "Satan 2" missile is rumoured to be the most powerful ever designed and is equipped with stealth technology to help it dodge enemy radar systems .

This terrifying doomsday weapon is likely to strike fear into the hearts of Western military chiefs, as current missile defence technology is totally incapable of stopping it.

Its official name is the RS-28 Sarmat and it will replace aging Soviet R-36M missiles, which NATO military experts nicknamed "Satan".

"In this sense, the Sarmat missile will not only become the R-36M's successor, but also to some extent it will determine in which direction nuclear deterrence in the world will develop," the Russian news network Zvezda reported .